Center of Mass

Mr. Andersen explains the concept of center of mass using various examples, including a tire, hammer, and Saturn V rocket. He demonstrates how the center of mass affects motion and how it can be calculated using simulations and experiments. Practical examples with ice blocks and springs illustrate constant velocity in systems without external forces. The video concludes with methods to calculate the center of mass in complex systems and multiple dimensions.

What happens to the motion of an object when its center of mass is off-center?

• The object moves in a straight line.

• The motion becomes more uniform.

• The motion appears irregular.

• The object stops moving.

In the absence of an external force, what happens to the center of mass of a system?

• It disappears.

• It moves randomly.

• It remains in the same location.

• It accelerates.

What is the purpose of using a simulation to understand the center of mass?

• To measure the speed of an object.

• To calculate the exact weight of an object.

• To visualize the center of mass in different scenarios.

• To determine the color of an object.

When observing the motion of two ice blocks connected by a spring, where is the center of mass located?

• Outside the system.

• At the edge of the spring.

• At the midpoint of the spring.

• At the center of one ice block.

How does the center of mass move in a system with no external force?

• With constant velocity.

• With increasing acceleration.

• It remains stationary.

• In a circular path.

What is the first step in calculating the center of mass for multiple masses?

• Calculate the speed of each mass.

• Determine the total weight of the system.

• Find the distance of each mass from a reference point.

• Measure the temperature of the system.

How do you calculate the center of mass in two dimensions?

• By using the same formula for both x and y coordinates.

• By determining the color of the object.

• By measuring the height of the object.

• By calculating the volume of the object.